I think it's important because scientists need to be able to communicate.
Think about why you write a lab report. When we write lab reports, we are effectively communicating how we did our experiment, our results, and what we think about those results.
We need to have transparency and be able to replicate results in order to know if they are accurate to our hypothesis. Theories are not 100% proven. We only know what we are able to observe and all measurements have their limitations.
Answer: The Old World
Long, long ago cows still existed before the New World. They were discovered for their milk hundreds of years before the New World. The answer is the Old World.
Hope this helps!
Answer:The Earths core
,right do you need the layers of ?